Table 1 Observed and expected neutral polymorphism at silent sites (θsyn) on sex chromosomes and autosomes in R. hastatulus
ChromosomeObserved θsynExpected θsyn
X0.0045 (X/A = 0.82)0.0041 (X/A = 0.75)
Y0.0001 (Y/A = 0.018)0.0014 (Y/A = 0.25)
  • Values in parentheses indicate the observed and expected diversity values on sex chromosomes relative to autosomes, where expected values assume neutrality and equal sex ratios (Figure 1).